aboutsummaryrefslogtreecommitdiffstats
path: root/activesupport/test/share_lock_test.rb
diff options
context:
space:
mode:
Diffstat (limited to 'activesupport/test/share_lock_test.rb')
-rw-r--r--activesupport/test/share_lock_test.rb150
1 files changed, 74 insertions, 76 deletions
diff --git a/activesupport/test/share_lock_test.rb b/activesupport/test/share_lock_test.rb
index 42fd5eefc1..a40c813fe3 100644
--- a/activesupport/test/share_lock_test.rb
+++ b/activesupport/test/share_lock_test.rb
@@ -11,38 +11,38 @@ class ShareLockTest < ActiveSupport::TestCase
def test_reentrancy
thread = Thread.new do
- @lock.sharing { @lock.sharing {} }
- @lock.exclusive { @lock.exclusive {} }
+ @lock.sharing { @lock.sharing { } }
+ @lock.exclusive { @lock.exclusive { } }
end
assert_threads_not_stuck thread
end
def test_sharing_doesnt_block
with_thread_waiting_in_lock_section(:sharing) do |sharing_thread_latch|
- assert_threads_not_stuck(Thread.new { @lock.sharing {} })
+ assert_threads_not_stuck(Thread.new { @lock.sharing { } })
end
end
def test_sharing_blocks_exclusive
with_thread_waiting_in_lock_section(:sharing) do |sharing_thread_release_latch|
@lock.exclusive(no_wait: true) { flunk } # polling should fail
- exclusive_thread = Thread.new { @lock.exclusive {} }
+ exclusive_thread = Thread.new { @lock.exclusive { } }
assert_threads_stuck_but_releasable_by_latch exclusive_thread, sharing_thread_release_latch
end
end
def test_exclusive_blocks_sharing
with_thread_waiting_in_lock_section(:exclusive) do |exclusive_thread_release_latch|
- sharing_thread = Thread.new { @lock.sharing {} }
+ sharing_thread = Thread.new { @lock.sharing { } }
assert_threads_stuck_but_releasable_by_latch sharing_thread, exclusive_thread_release_latch
end
end
- def test_multiple_exlusives_are_able_to_progress
+ def test_multiple_exclusives_are_able_to_progress
with_thread_waiting_in_lock_section(:sharing) do |sharing_thread_release_latch|
exclusive_threads = (1..2).map do
Thread.new do
- @lock.exclusive {}
+ @lock.exclusive { }
end
end
@@ -53,7 +53,7 @@ class ShareLockTest < ActiveSupport::TestCase
def test_sharing_is_upgradeable_to_exclusive
upgrading_thread = Thread.new do
@lock.sharing do
- @lock.exclusive {}
+ @lock.exclusive { }
end
end
assert_threads_not_stuck upgrading_thread
@@ -66,7 +66,7 @@ class ShareLockTest < ActiveSupport::TestCase
upgrading_thread = Thread.new do
@lock.sharing do
in_sharing.count_down
- @lock.exclusive {}
+ @lock.exclusive { }
end
end
@@ -81,7 +81,7 @@ class ShareLockTest < ActiveSupport::TestCase
exclusive_threads = (1..2).map do
Thread.new do
@lock.send(use_upgrading ? :sharing : :tap) do
- @lock.exclusive(purpose: :load, compatible: [:load, :unload]) {}
+ @lock.exclusive(purpose: :load, compatible: [:load, :unload]) { }
end
end
end
@@ -95,7 +95,7 @@ class ShareLockTest < ActiveSupport::TestCase
with_thread_waiting_in_lock_section(:sharing) do |sharing_thread_release_latch|
thread = Thread.new do
@lock.sharing do
- @lock.exclusive {}
+ @lock.exclusive { }
end
end
@@ -105,7 +105,7 @@ class ShareLockTest < ActiveSupport::TestCase
sharing_thread_release_latch.count_down
thread = Thread.new do
- @lock.exclusive {}
+ @lock.exclusive { }
end
assert_threads_not_stuck thread
@@ -115,68 +115,66 @@ class ShareLockTest < ActiveSupport::TestCase
def test_exclusive_conflicting_purpose
[true, false].each do |use_upgrading|
with_thread_waiting_in_lock_section(:sharing) do |sharing_thread_release_latch|
- begin
- together = Concurrent::CyclicBarrier.new(2)
- conflicting_exclusive_threads = [
- Thread.new do
- @lock.send(use_upgrading ? :sharing : :tap) do
- together.wait
- @lock.exclusive(purpose: :red, compatible: [:green, :purple]) {}
- end
- end,
- Thread.new do
- @lock.send(use_upgrading ? :sharing : :tap) do
- together.wait
- @lock.exclusive(purpose: :blue, compatible: [:green]) {}
- end
+ together = Concurrent::CyclicBarrier.new(2)
+ conflicting_exclusive_threads = [
+ Thread.new do
+ @lock.send(use_upgrading ? :sharing : :tap) do
+ together.wait
+ @lock.exclusive(purpose: :red, compatible: [:green, :purple]) { }
+ end
+ end,
+ Thread.new do
+ @lock.send(use_upgrading ? :sharing : :tap) do
+ together.wait
+ @lock.exclusive(purpose: :blue, compatible: [:green]) { }
end
- ]
-
- assert_threads_stuck conflicting_exclusive_threads # wait for threads to get into their respective `exclusive {}` blocks
-
- # This thread will be stuck as long as any other thread is in
- # a sharing block. While it's blocked, it holds no lock, so it
- # doesn't interfere with any other attempts.
- no_purpose_thread = Thread.new do
- @lock.exclusive {}
end
- assert_threads_stuck no_purpose_thread
+ ]
- # This thread is compatible with both of the "primary"
- # attempts above. It's initially stuck on the outer share
- # lock, but as soon as that's released, it can run --
- # regardless of whether those threads hold share locks.
- compatible_thread = Thread.new do
- @lock.exclusive(purpose: :green, compatible: []) {}
- end
- assert_threads_stuck compatible_thread
+ assert_threads_stuck conflicting_exclusive_threads # wait for threads to get into their respective `exclusive {}` blocks
- assert_threads_stuck conflicting_exclusive_threads
+ # This thread will be stuck as long as any other thread is in
+ # a sharing block. While it's blocked, it holds no lock, so it
+ # doesn't interfere with any other attempts.
+ no_purpose_thread = Thread.new do
+ @lock.exclusive { }
+ end
+ assert_threads_stuck no_purpose_thread
+
+ # This thread is compatible with both of the "primary"
+ # attempts above. It's initially stuck on the outer share
+ # lock, but as soon as that's released, it can run --
+ # regardless of whether those threads hold share locks.
+ compatible_thread = Thread.new do
+ @lock.exclusive(purpose: :green, compatible: []) { }
+ end
+ assert_threads_stuck compatible_thread
- sharing_thread_release_latch.count_down
+ assert_threads_stuck conflicting_exclusive_threads
- assert_threads_not_stuck compatible_thread # compatible thread is now able to squeak through
+ sharing_thread_release_latch.count_down
- if use_upgrading
- # The "primary" threads both each hold a share lock, and are
- # mutually incompatible; they're still stuck.
- assert_threads_stuck conflicting_exclusive_threads
+ assert_threads_not_stuck compatible_thread # compatible thread is now able to squeak through
- # The thread without a specified purpose is also stuck; it's
- # not compatible with anything.
- assert_threads_stuck no_purpose_thread
- else
- # As the primaries didn't hold a share lock, as soon as the
- # outer one was released, all the exclusive locks are free
- # to be acquired in turn.
+ if use_upgrading
+ # The "primary" threads both each hold a share lock, and are
+ # mutually incompatible; they're still stuck.
+ assert_threads_stuck conflicting_exclusive_threads
- assert_threads_not_stuck conflicting_exclusive_threads
- assert_threads_not_stuck no_purpose_thread
- end
- ensure
- conflicting_exclusive_threads.each(&:kill)
- no_purpose_thread.kill
+ # The thread without a specified purpose is also stuck; it's
+ # not compatible with anything.
+ assert_threads_stuck no_purpose_thread
+ else
+ # As the primaries didn't hold a share lock, as soon as the
+ # outer one was released, all the exclusive locks are free
+ # to be acquired in turn.
+
+ assert_threads_not_stuck conflicting_exclusive_threads
+ assert_threads_not_stuck no_purpose_thread
end
+ ensure
+ conflicting_exclusive_threads.each(&:kill)
+ no_purpose_thread.kill
end
end
end
@@ -231,7 +229,7 @@ class ShareLockTest < ActiveSupport::TestCase
assert_threads_stuck waiting_exclusive
late_share_attempt = Thread.new do
- @lock.sharing {}
+ @lock.sharing { }
end
assert_threads_stuck late_share_attempt
@@ -252,14 +250,14 @@ class ShareLockTest < ActiveSupport::TestCase
@lock.sharing do
ready.wait
attempt_reentrancy.wait
- @lock.sharing {}
+ @lock.sharing { }
end
end
exclusive = Thread.new do
@lock.sharing do
ready.wait
- @lock.exclusive {}
+ @lock.exclusive { }
end
end
@@ -280,7 +278,7 @@ class ShareLockTest < ActiveSupport::TestCase
Thread.new do
@lock.sharing do
ready.wait
- @lock.exclusive(purpose: :x, compatible: [:x], after_compatible: [:x]) {}
+ @lock.exclusive(purpose: :x, compatible: [:x], after_compatible: [:x]) { }
done.wait
end
end
@@ -297,7 +295,7 @@ class ShareLockTest < ActiveSupport::TestCase
Thread.new do
@lock.sharing do
ready.wait
- @lock.exclusive(purpose: :x) {}
+ @lock.exclusive(purpose: :x) { }
done.wait
end
end,
@@ -323,7 +321,7 @@ class ShareLockTest < ActiveSupport::TestCase
Thread.new do
@lock.sharing do
ready.wait
- @lock.exclusive(purpose: :x) {}
+ @lock.exclusive(purpose: :x) { }
done.wait
end
end,
@@ -352,7 +350,7 @@ class ShareLockTest < ActiveSupport::TestCase
Thread.new do
@lock.sharing do
ready.wait
- @lock.exclusive(purpose: :x) {}
+ @lock.exclusive(purpose: :x) { }
done.wait
end
end,
@@ -386,7 +384,7 @@ class ShareLockTest < ActiveSupport::TestCase
incompatible_thread = Thread.new do
@lock.sharing do
ready.wait
- @lock.exclusive(purpose: :x) {}
+ @lock.exclusive(purpose: :x) { }
end
end
@@ -418,7 +416,7 @@ class ShareLockTest < ActiveSupport::TestCase
incompatible_thread = Thread.new do
ready.wait
- @lock.exclusive(purpose: :z) {}
+ @lock.exclusive(purpose: :z) { }
end
recursive_yield_shares_thread = Thread.new do
@@ -427,7 +425,7 @@ class ShareLockTest < ActiveSupport::TestCase
@lock.yield_shares(compatible: [:y]) do
do_nesting.wait
@lock.sharing do
- @lock.yield_shares(compatible: [:x, :y]) {}
+ @lock.yield_shares(compatible: [:x, :y]) { }
end
after_nesting.wait
end
@@ -439,12 +437,12 @@ class ShareLockTest < ActiveSupport::TestCase
assert_threads_stuck incompatible_thread
compatible_thread = Thread.new do
- @lock.exclusive(purpose: :y) {}
+ @lock.exclusive(purpose: :y) { }
end
assert_threads_not_stuck compatible_thread
post_nesting_incompatible_thread = Thread.new do
- @lock.exclusive(purpose: :x) {}
+ @lock.exclusive(purpose: :x) { }
end
assert_threads_stuck post_nesting_incompatible_thread